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    2-PHASE THRESHOLD DETECTOR BASED CIRCUITS
    92.
    发明申请
    2-PHASE THRESHOLD DETECTOR BASED CIRCUITS 有权
    基于2相阈值检测器的电路

    公开(公告)号：US20120293232A1

    公开(公告)日：2012-11-22

    申请号：US13112275

    申请日：2011-05-20

    Applicant: Matthew Guyton ,  Hae-Seung Lee

    Inventor： Matthew Guyton ,  Hae-Seung Lee

    IPC: G06G7/18

    CPC classification number: H03M1/56 ,  H03M1/162

    Abstract: A switched capacitor circuit includes a threshold detector to generate a threshold detection signal when a difference between first and second input signals crosses a predetermined level. A coarse current source produces a coarse ramp. A series sampling capacitor samples a coarse output voltage when the threshold detector indicates a first threshold crossing. The sampling capacitor is connected in series with a fine current source producing a fine ramp.

    Abstract translation: 开关电容电路包括阈值检测器，用于当第一和第二输入信号之间的差异跨越预定电平时产生阈值检测信号。 粗电流源产生粗斜坡。 当阈值检测器指示第一阈值交叉时，串联采样电容器对粗略的输出电压进行采样。 采样电容器与精细电流源串联连接，产生细微的斜坡。

    System and Method for Background Calibration of Time Interleaved Analog to Digital Converters
    93.
    发明申请
    System and Method for Background Calibration of Time Interleaved Analog to Digital Converters 有权
    时间交错模数转换器背景校准的系统和方法

    公开(公告)号：US20120262318A1

    公开(公告)日：2012-10-18

    申请号：US13443297

    申请日：2012-04-10

    Applicant: Matthew Allen Zornig Straayer ,  Hae-Seung Lee

    Inventor： Matthew Allen Zornig Straayer ,  Hae-Seung Lee

    IPC: H03M1/10

    CPC classification number: H03M1/1057 ,  H03M1/1215

    Abstract: Various embodiments allow for background calibration of channel-to-channel mismatch errors.In certain embodiments calibration is accomplished by comparing the output of I-ADCs against the output of a reference ADC and correlating the difference to a known function to obtain a correction signal that can be used to correct channel-to-channel mismatch errors.

    Abstract translation: 各种实施例允许对信道到信道不匹配错误的背景校准。 在某些实施例中，通过将I-ADC的输出与参考ADC的输出进行比较来实现校准，并将该差与已知功能相关，以获得可用于校正信道到信道失配错误的校正信号。

    OFFSET CANCELLATION FOR SAMPLED-DATA CITCUITS
    94.
    发明申请
    OFFSET CANCELLATION FOR SAMPLED-DATA CITCUITS 有权
    取消数据资料的优先取消

    公开(公告)号：US20110032003A1

    公开(公告)日：2011-02-10

    申请号：US12909168

    申请日：2010-10-21

    Applicant: Hae-Seung Lee

    Inventor： Hae-Seung Lee

    IPC: G11C27/02

    CPC classification number: H03H19/004 ,  G11C7/06 ,  G11C27/026 ,  H03M1/0607 ,  H03M1/403 ,  H03M1/442 ,  H03M3/356

    Abstract: A comparator based circuit with effective offset cancellation includes first and second amplifiers and an offset capacitor operatively connected to the first and second amplifiers. An offset voltage source generates an offset voltage. A first switch connects the offset voltage source to ground during a first time period. The first amplifier generates an output voltage in response to the first switch connecting the offset voltage source to ground during the first time period. A second switch connects the offset capacitor to ground during a second time period. The first switch disconnects the offset voltage source from ground during a third time period, and the second switch disconnects the offset capacitor from ground during the third time period.

    Abstract translation: 具有有效偏移消除的基于比较器的电路包括第一和第二放大器以及可操作地连接到第一和第二放大器的偏移电容器。 偏移电压源产生偏移电压。 在第一时间段期间，第一开关将偏移电压源连接到地。 第一放大器响应于在第一时间段期间将偏移电压源连接到地的第一开关产生输出电压。 在第二时间段内，第二开关将偏移电容器接地。 第一个开关在第三个时间段内断开偏移电压源与地的连接，第二个开关在第三个时间段内将偏移电容器与地线断开。

    Output hold circuits for sample-data circuits
    96.
    发明授权
    Output hold circuits for sample-data circuits 有权
    采样数据电路的输出保持电路

    公开(公告)号：US07504866B2

    公开(公告)日：2009-03-17

    申请号：US11617213

    申请日：2006-12-28

    Applicant: Hae-Seung Lee

    Inventor： Hae-Seung Lee

    IPC: H03K5/22

    CPC classification number: G11C27/024 ,  G11C27/026

    Abstract: A sampled-data analog circuit uses zero-crossing detector. A waveform generator produces a plurality of segments of ramp at the output. An output of a zero crossing detector controls a sampling switch, thereby causing a precise sample of the output voltage to be taken at the instant the zero crossing detector senses the zero crossing of the input signal. The waveform generator further includes a output hold function to maintain the output voltage.

    Abstract translation: 采样数据模拟电路使用过零检测器。 波形发生器在输出端产生多个斜坡段。 过零检测器的输出控制采样开关，从而在过零检测器感测输入信号的过零点的瞬间产生输出电压的精确采样。 波形发生器还包括保持输出电压的输出保持功能。

    CMOS active pixel with hard and soft reset
    97.
    发明授权
    CMOS active pixel with hard and soft reset 有权

    公开(公告)号：US07489354B2

    公开(公告)日：2009-02-10

    申请号：US10752112

    申请日：2004-01-06

    Applicant: Hae-Seung Lee ,  Keith Glen Fife ,  Lane G. Brooks ,  Jungwook Yang

    Inventor： Hae-Seung Lee ,  Keith Glen Fife ,  Lane G. Brooks ,  Jungwook Yang

    IPC: H04N5/335

    CPC classification number: H04N5/3597 ,  H04N5/363 ,  H04N5/3698 ,  H04N5/374 ,  H04N5/3745

    Abstract: A circuit for a pixel site in an imaging array includes a light-detecting element to convert incident light to a photocurrent and a reset transistor, operatively connected to the light-detecting element, to reset a voltage associated with the light-detecting element. The reset transistor hard resets the voltage associated with the light-detecting element and soft resets the voltage associated with the light-detecting element after the generation of the hard reset of the voltage associated with the light-detecting element. A pixel voltage of a column or row line is also measured by hard resetting the column or row line voltage to a first predetermined voltage; soft resetting the column or row line voltage to a first pixel voltage; hard resetting the column or row line voltage to a second predetermined voltage; soft resetting the column or row line voltage to a second pixel voltage; and determining a difference between the first and second pixel voltages, the difference being the measured pixel voltage.

    Operational transconductance amplifier for high-speed, low-power imaging applications
    99.
    发明授权
    Operational transconductance amplifier for high-speed, low-power imaging applications 失效
    用于高速，低功耗成像应用的运算跨导放大器

    公开(公告)号：US07289149B1

    公开(公告)日：2007-10-30

    申请号：US10400731

    申请日：2003-03-27

    Applicant: Hae-Seung Lee ,  Keith Glen Fife

    Inventor： Hae-Seung Lee ,  Keith Glen Fife

    IPC: H04N5/235 ,  H04N5/228 ,  H04N3/14 ,  H04N5/335

    CPC classification number: H04N5/378 ,  H03F1/26 ,  H03F3/08 ,  H03F3/45192 ,  H03F3/45475 ,  H03F2200/372 ,  H03F2203/45028 ,  H03F2203/45134 ,  H03F2203/45138 ,  H03F2203/45302 ,  H04N5/357

    Abstract: A low power imaging array has a plurality of pixels wherein each pixel converts an intensity of incident light into electrical energy. An operational transconductance amplifier is utilized in conjunction with the imaging array to process the image signals from the low power imaging array. The operational transconductance amplifier includes a current mirror stage with a current mirror gain factor. The current mirror gain factor is selected based on a pixel noise level introduced by the low power imaging array such that current mirror gain factor noise introduced by the current mirror gain factor results in an overall noise level that is less than or equal to a predetermined level.

    Abstract translation: 低功率成像阵列具有多个像素，其中每个像素将入射光的强度转换成电能。 结合成像阵列利用运算跨导放大器来处理来自低功率成像阵列的图像信号。 运算跨导放大器包括具有电流镜增益系数的电流镜级。 基于由低功率成像阵列引入的像素噪声电平来选择电流镜增益因子，使得由电流镜增益因子引入的电流镜增益因子噪声导致小于或等于预定电平的总噪声电平 。

    Pixel design including in-pixel correlated double sampling circuit
    100.
    发明授权
    Pixel design including in-pixel correlated double sampling circuit 失效
    像素设计包括像素内相关双采样电路

    公开(公告)号：US07277129B1

    公开(公告)日：2007-10-02

    申请号：US10284938

    申请日：2002-10-31

    Applicant: Hae-Seung Lee

    Inventor： Hae-Seung Lee

    IPC: H04N3/14 ,  H04N5/335 ,  H04N5/217 ,  H01L27/00

    CPC classification number: H04N5/357 ,  H04N5/3575 ,  H04N5/37452 ,  H04N5/378

    Abstract: An image sensor having a plurality of pixels, each including a sense node; an output node; a first device, connected to the sense node, producing a signal at the sense node that is proportional to incident light intensity at the pixel; at least one select node to receive a first select signal for selecting the pixel output node from the plurality of pixels; a reset device for resetting the pixel; and a sample and hold circuit including a sample node coupled to the sense node. At least one amplifier is provided, including a first input node to receive an output signal from the output node of a selected pixel and a second input node connected to a reference voltage source provided as a reference to reset a selected pixel. An amplifier output node is connected to couple an amplifier output signal to a selected pixel's sample and hold circuit.

    Abstract translation: 一种具有多个像素的图像传感器，每个像素包括感测节点; 输出节点; 连接到感测节点的第一设备，在感测节点处产生与像素处的入射光强成比例的信号; 至少一个选择节点，用于接收用于从所述多个像素中选择所述像素输出节点的第一选择信号; 用于复位像素的复位装置; 以及包括耦合到感测节点的采样节点的采样和保持电路。 提供至少一个放大器，包括用于从所选择的像素的输出节点接收输出信号的第一输入节点和连接到参考电压源的第二输入节点，所述参考电压源被提供作为参考以复位所选择的像素。 连接放大器输出节点以将放大器输出信号耦合到所选像素的采样和保持电路。

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